The Australian Electoral Commission has found Liberal National Party (LNP) volunteers acted illegally by dressing in T-shirts with Greens party slogans in the Brisbane seat of Ryan.

The Queensland Labor Party made a formal complaint to the AEC earlier today after discovering the LNP supporters at polling booths.

ALP state secretary Anthony Chisholm said some LNP supporters were handing out flyers at The Gap and Toowong in Brisbane to capture Greens preferences.

This afternoon, AEC chief legal officer Paul Pirani revealed in a letter to ALP assistant state secretary Jackie Trad that the LNP was threatened with legal action in the Federal Court before agreeing to stop handing out the pamphlets and to remove or turn inside out the offending shirts.

"On the receipt of Mr Chisholm's letter the attachment[s] were carefully examined and the AEC formed the view that the material and the actions involved were in breach of the requirements of section 329 of the Commonwealth Electoral Act 1918," Mr Pirani said in the letter.

The state director for the LNP, Michael O'Dwyer, undertook just prior to the AEC launching legal action this afternoon that the pamphlets and shirts would be removed.

Earlier, Mr Chisholm said Labor would pursue legal action.

"It's not so much their flyers, it's the fact they have their people handing them out in T-shirts saying 'vote Green' - that is clearly misleading and that is the issue we are taking with this," he said.

The LNP had said in response that the flyers did not recommend a preference flow to Greens voters and had been authorised by the party.

The Ryan stoush was not the only skirmish of the day, with Opposition Leader Tony Abbott accusing Labor of using deceptive tactics in the western Sydney seat of Lindsay.

Mr Abbott accused Labor volunteers at a polling booth in Penrith of wearing T-shirts with no Labor logo and of the same colour as the Liberal volunteers' shirts.

Mr Abbott said the shirts worn by supporters of Labor candidate for Lindsay David Bradbury were the same colour as those of Liberal volunteers.

He said the T-shirts had no Labor logo but had Mr Bradbury's name printed on them.

Mr Abbott says Labor is scared of its own brand.

"I mean blue T-shirts, no Labor logo to speak of on his sign. It's almost like it's a campaign of deception they're waging out here isn't it?" he said.

Meanwhile the ALP and Coalition have both been accused of trying to grab Greens preferences in Lindsay, where the Greens have run an open ticket.

An ALP flier was distributed with the words "thinking of voting Green" and then telling people to direct their preferences to Mr Bradbury.

Greens candidate Suzie Wright says it is highly misleading and many people thought it was an official Greens how-to-vote flier.

The Liberal Party also distributed a flier featuring a photo of Bob Brown and touting the Liberal Party's green credentials.